Connecting rod



April 22, 1930. o. T. lsAAcsoN CONNECTING ROD Filed Feb. 15, 1925 2 sheetshef.

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April 22, 1930. o. 'rv lsAAcsoN CONNECTING ROD 2 Sheets-Sheet 2 Filed Feb. l5. 1928 //oer Z' mama/7,-

peeled Api. 22,1930 '1,755,650

- oLIvER vT. -Isnnesloivy or' sn:cfLoUn,,nrrivivnso'rny CONNECTINGROD Application inea February i5,r 1928. serial no; 254,503.

This invention relates to improvements in that end ofthe rconnecting rod which is con-I i connecting rods and has as its general object nected with the crank or other eccentric part to provide a connecting rod which Will greatto which or from which poWer'is to be trans-YK ly enhance the eliiciency of theengine or other niitted through the medium of said rod.

i mechanism of*whichit'constitiites'a part. c lVllile the accompanying drawings and the 55Vk VIn connecting rodsas ordinarilyg'condescription; which is,toffolloiv,'constitute a" strncte'd, land vWhere suchrods are employed, disclosure of the preferredembodiment of for example, yin internalv combustion engines. the invention, it Will be understood that varior steam engines, the povver` transmifttedtov ous changes-may be Inade- Within the scope ofV 10 the rod from the piston With which it is con- What is claimed.' g a e nected is in the vnat-ure yof a rectilinear force In the accompanyingdrawings: wliichis imposedv upon 'or transmitted tothe `Figure l is a1vieiv'in`elevation or la con; crank to Which the rod is connected, and this necting rod, embodyingY the invention, inforce vis expended substantially at theino-1 stalled in van internal combustion 'enginef 15 nient the crank to which thero'd is connected, Figure 2 is a side'elevation'or'the connecte5 reaches the end orits throw, so that, when ing rod; I l Y the crank and connecting rod are in this posi- Figure 3 is a detail view partlyfin vertical tion, there' isa tendency toward cessation fof section and' partly in v'elevation illustrating movement Hor the parts. This is also trueA` of the lower end or the rod or in ctherfivor'ds ,20 connecting rods Where"they'are'femployed in that end'-\vliich lis to be connected'witli. the. 70 machinery' for V imparting povverto moving Crank or Yother eccentric part'froinivliiclior parts, frein-a crank shaft* Therefore the tofwhich power is to be transmitted ;KV g present invention has as one of its objects to Figure 4 is a verticaltransverse sectional provide a connectingrod embodying facoun- View` taken substantially =onthe line 4%44' terweightwhich Wil l"'act to give impetus'to of Figiire 3 looking in the direction indicated 75 the rodpnear the'end ofits stroke, thus proby vthe arrows;V p f 1 riding lmeans for translating Vor converting Figure is a horizontalsec'tional vie'iv'v they rectilinear forceinto a. lcurvilinear force taken substantially on theline 3f'of 'Figure 'and thus carryingjthe crank-connected end 3 looking inthe ydirectionindicated,by the 30 of the connectingrod past' dead center, Aand arrows; -1- n f so thei'et'oretheinvention contemplates the pro- Figure 6 is a top llanvieiv o'f'rthelower vision of a 'connecting Vrodvvhich Willeiect Section of the connecting rod.-v v Va more uniform and'steady application 'of Figur-e -1 ofthe drawings illustrates the ypower the parts to be movedthus materialconnecting rod, embodying' the invention, inf;

35 ly vincreasing the'feiiicienc'y ofthe mechanism stalled in an internal combustion engine, but 85 or" which vthe connecting' rod constitutes a it Willbe evidentrroin the description lwhich f part. t, is lto follow, thatvth'e connecting rod may be Another object of, theinventionis to proemployed vin other l relations -andin" other` vide i"nieansmfory` acco'mplishingy the; results mechanisms `Without Iinanywvay departing 40 above outlined and which means may be emvfromv the' spirit 'of the invention. Thebenbodied in afconnecting rod adapted torv con nccting rodembodies a section` l providedl atv nection'with a crank Yor Withan eccentric, 4the one end with the usual bearingcollar 2 .for

inc-ans employed bpg' equally effective in"A connection With part such forex'ainple 'as converting the rectilinear force,vl imposedl the Wrist'pin or'anengineipiston, rasshoivn ,45 .upon'fthe ro'd,`into ak curvilinear force, for the in'Figure l` of the drawings, the `rodbeing 95 f c purposesstated.` ,Y y provi'de'dfat its opposite' en'd With one-half of Another object'cf the invention is'tol pro# al bearingv` which is, to fit' an eccentricallyf vide, in 4ccnnectio'n with a connecting rod movable part, such for-example as the crank yembodying` the meansreferredto'above, novel 5 of a crank shaft 6, as 4shown in the Vsaid means'whereby lubricant may be suppliedfto Figure l, the 'cap or other section ofthe'bear- '100 ing 4,.being indicated by the numeral 7 and Vthe two sections being secured together, in the usual manner, by the bolts 8. At this point it may be stated that Figure 1 is only repre,

sentative ot' one use of the connecting rod embodying the invention and that the part 3 may either ,CQnSttets a power delivering Part 21S in theeafl Fleur@ 1,01 a part to be driven, and, on the other hand, the part 5, which is eccentrically vmovable, may constitute` (a driven part as in the saidignre, or -apower delivering part. Y

VThe cap 7 of the bearing l constitutes a preferably integral part of the other section of the connecting' rod embodying the invention, section is indicated by the nu-V meral i9', and this "section" comprises a body 1o' weergave new @which sufficient. mass toadapt .it to constitute, in effect, e @Unterer/ish@ for the runes@ 0f @averties the retlfearorce imposed Upon 'theeeeeeeteerei into a eurvilnear ferfie in attaining .theobjects the presentsinventien- The betty 1091er vbe 0f :any desired contour as for example the frnstopyramidal form* shown in the drawings and preferably having a'transversely'convexr under side in- Y deated by the' numeral 11, for e perros@ t0 b Preesntly eplainei.

At this 'reilit it will ber-Observed that the counterweight 10 is located at that side of thel eccentric part 5, opposite' the side at A H i 1 of the connecting rod is located, and, in practice, thisbody lO will possess such weight or mass that the center @gravity e will be'rnuch nearer the axis of the crank er vether Part than to the wrist-.pin l Vr other .part ,3, thelmass et" the body 10 be-A in.: ier-ther prerertened in consonance thief the section with theilength of stroke andvveigl-it` ofthe '@Qneeetfnsred, the bearing 2', and the YPieton header other moving parts, as the case may be.` It will -likewise be nnderstoodat this .v point that, inthe operation of the mechanismV in .connection with which the lconnecting rod is employed,:the line of force .transmitted to thepart 5 or trom this part, will'be at all Y times tangential lto the circle described by the axis of the Vpart 5, in the movementofv said-part, land it is for ,this reason that the feretransmitted, by the connecties rod, t@ the part`5, inthe illustrated embodiment of the invention, will be converted into a curi be transmitted to the crank shaft, Where the @meeting redis emplovedin .C011- nection with an internal combusti-on'orY other type of eng-ine, and,l where the connecting rod is employedina mechanism in which the part 5 ,constitutes the rJGWG/f ,delivering P211t .and the part-3 the driven part, greater power will be delivered tol the said .part 3V in the rotatenlor travel ef the raft 5f Y i In order that the eetve messer Weight varied f the senese-tine rod; asa Whole vilinear fforce,fwith the result that' more of the section 9 of the connecting rod may be accurately varied, the body 10 is Jormed with a cylindrical bore 12 opening through Y its lower end 11, anda comparatively large and heavy threaded plugV 13 is adjustably itted into the said bore, the bore being threaded to adjustably accommodate the said plug. The plug may be provided in its lower endrwith a rectangular socket 14: for the eni gagement therein of a suitable tool for eiiect- 'ing rotative adjustment of the plu g, and it evident that its effectiveness may be by adjusting the plug toward and away from the anis of the bearing comprising the parts et and 7. In 'order that the plug may be held in various positions of adjustnient, a set-'screw 15 `is adjustably threaded in a bore 16 Itermed inthe body 10 counter to Will be.

the bore 12, and this set screw is adjustable to bind at its inner end against the plug 13, for the purpose stated. Ait this point itrwill be evident that adjustment of the plug 13 will serve to vary `,the effective `mass of the member 9, as fa-whole, the inertiaof the member 9 beine greater-when the plus is liuetd to a position more remote from the axis of the part 5, than when adjusted to a position Y nearer said axis.

f Where the .connecting rod, embodying the invention, 1s vemploye d in an internal combustion engine, the bearing members l and 7 are preferably providedwith linings 17, and Shms 1:8 are arrangedl between these me j bers,land, V,as previously stated, the invention contemplates the provision of novel means whereby lubricant may be supplied to this bearing, and-.this mee-IIS Willfeov be described# ,L

ls illustrated in Figures 3 and 5 01"' .the

the body 10 fof the section V9 ofy the iv cennectingj rod formed withV a bore 19, and

this bore 1 V enlarged lower end as at 20 and the lower end oft Athe enlargement is threaded as at 21to accommodatefa bushing which retains one end of a dipping or takeup spout 23.. lt will be observed by reference to Figuresly and 3 lof the drawings that the is. vcurved downwardly and lateraliy inwardly toward the longitudinal center of vthe connecting rod as a whole, the lower'end of t e-bore 19 terminating at oneside of this center line, so that, fin the opera-tion of the connecting rofl, and as-thelcrankv 5 passes threugh the latter half 0i its down stroke and :sthal-.'of its up stroke, the intake end of the-.Spent will be Ycausedtopass through the spout 23 vand delivered through the bore 19, may reach the surface of the crank and the inner surfaces of thelinings 17 `for the v bearings In order that oil taken up by the 'spout 23 and delivered into the bore 19 may be prevented from lowing back into the crank case, by way of the spout, a. small cheek valve 26 is arranged within the enlargement 20 of the bore in position to rest upon the upper or inner end ofthe said spout 23, a coni-- pression spring 27 being likewise arranged within the said enlargement of the bore and bearing against thev valve to yieldingly hold.

the same in Aposition 'closing the upper end of the said spout. It will be understood of course that the check valve may be dispensed with if desired as, in most instances, sufficient oil will be taken up by the spout' 23 and with sulicient force-oi:l flow through the spout to effect thorough lubrication of the bearing.

It will be'evident frointhe foregoing de-y scription of the inventionthat the weight body 10 of the section 9 may be formed separate from the bearing member 7 and secured thereto, or formed integral therewith as shown in the drawings, and it will likewise be understood that this body 10 may be'ot some form other than that illustrated in the drawings, so long as a eounterweight is provided at this end of the connect-ing rod.

As previously stated, the under side Vof the body 10 is transversely curved andit will be evident that due to this curvature, the lubricating oil in the sump 34 will not be directed away from the intake end ofthe spout 23 in the operation'of the connecting rod.

While the auxiliary weight 13 presents the advantages ascribed to it above, it will be understood of course that if the counterweight 10 is properly proportioned, asA regards its mass, with respect to the connecting rodproper, the piston head, the connecting rod bearings, and other parts, this weight may be dispensed with. It will also be lunderstood that where the weight is employed, it need not be threaded adjustably into the bore in the weight'lO, but may be slidably litted insaid bore and secured in positions of adjustment by any suitable means. 4

Having thus described the invention, what IY claim is: y

1. A connecting rod comprising a substantially straight connecting rod proper having at one end a bearing section, a secondsection connected with and togetherV with the first mentioned section'forming'a complete bearing, a counterweight carried by the secthreaded weight and adapted to lock the weight at an adjusted position.

2. A connecting rod comprising a substantially straight connecting rod proper having atone end a bearing section, a second section connected withand together with the first mentioned section forming a complete bearing, a counterweight carried by the second tially straight connecting rod properhaving at one end a bearing section, a second section connected with and together with the first mentioned section forming a complete bearing, a eounterweiglit carried by the secondl mentioned section and entending in alineinent with the rod proper and spaced therefrom by the bearing, said counterweight having a threaded socket in alinement with the =rodfproper, a threaded weight movable inl said socket toward and away from said bear-A ing, land means engaging the thread of said threaded weight and adapted to lock the weight in adjusted position. Y

In testimony whereof I affix my signature.

` VoLivnn T. Isaacson.

izo'

ond mentioned section and extendingin ali'ne- Y ment with the rod proper and' spaced therefrom by the bearing,said counterweight having a threaded socket in alinement with the rodproper, a threaded weight movable in` f said 'socket toward and away from the bearing, anda'screwY engaging the side oilt-he 

